we are talking about http://www.winpilot.com/images4/PRO_1.gif right?

actually the xcsoar representation is quite similar, only that the climb values are not drawn in a 3D way, but using a polar diagram. The arrow that WinPilot shows is also available in XCSoar, just not as emphasized and it will get larger once the suggestion to recenter gets stronger. could you elaborate on what exactly you think is better in the WinPilot representation?